Best Buy is a major retailer for purchasing unlocked Android devices, often offering:

(e.g., to use with unlocked, Verizon, etc.) Let me know what you'd like to narrow down. Cell Phones: Smartphones and Mobile Phones - Best Buy

Moving away from all-plastic, manufacturers are offering metal frames and improved Gorilla Glass on lower-cost devices, increasing durability. Where to Purchase for Best Deals (Best Buy Focus)

Their "Unlocked" cell phone section provides the flexibility to switch carriers, which is key for power users and cost-conscious buyers.